Become A Defender

Defenders works on the ground, in the courts, and on Capitol Hill to protect and restore imperiled wildlife across North America and around the world. Together, we can ensure a future for the wildlife and wild places we all love.

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The Endangered Species Act (ESA) is in the fight of its life. Congress is determined to rewrite this landmark piece of legislation that protects threatened and endangered species on the brink of extinction. Without the ESA, it is estimated that 227 species would now be extinct.